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纳米复相永磁材料交换耦合作用的评述
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作者单位:

华北理工大学

作者简介:

通讯作者:

中图分类号:

TG273

基金项目:

国家自然科学基金资助(项目号51974134);河北省科技重大专项项目(项目号21281008Z)


Review on exchange coupling interaction of nanocomposite permanent magnet materials
Author:
Affiliation:

North China University of Science and Technology

Fund Project:

National Natural Science Foundation of China(51974134);Major Science and Technology Special Project of Hebei Province(21281008Z)

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    摘要:

    对比纳米复相永磁材料一维到三维的不同交换耦合作用模型,交换耦合作用会抑制软磁相的磁化反转,不同交换耦合作用模型对矫顽力影响不同。Henkel曲线δM峰值越高表明晶粒间交换耦合作用越强,一阶翻转曲线(first order reversal curve,FORC)峰值对应交换耦合作用强弱。纳米复相永磁材料有效各向异性Keff随晶粒尺寸减小而下降,当晶粒尺寸一定时,软磁相体积分数越高Keff越低。为了得到最大磁能积高并且Keff不低的纳米复相永磁材料,软磁相晶粒尺寸应在10nm左右,软磁相体积不能超过50%。

    Abstract:

    Compared with different exchange coupling models of one-dimensional to three-dimensional nanocomposite permanent magnet materials, exchange coupling will inhibit the magnetization reversal of soft magnetic phase, and different exchange coupling models have different effects on coercivity. The higher δM peak of Henkel curve indicates the stronger exchange coupling between grains. The peak of the first order reversal curve ( FORC ) corresponds to the exchange coupling. The effective anisotropy Keffof nanocomposite permanent magnet decreases with the decrease of grain size. When the grain size is constant, the higher the volume fraction of soft magnetic phase is, the lower the Keff is. In order to obtain nanocomposite permanent magnetic materials with high maximum energy product, the grain size of soft magnetic phase should be about 10 nm, and the volume of soft magnetic phase should not exceed 50 %.

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弭弘尧,张颖隆,李冰蕾,冯运莉.纳米复相永磁材料交换耦合作用的评述[J].稀有金属材料与工程,2022,51(11):4323~4332.[Mi Hongyao, Zhang Yinglong, Li Binglei, Feng Yunli. Review on exchange coupling interaction of nanocomposite permanent magnet materials[J]. Rare Metal Materials and Engineering,2022,51(11):4323~4332.]
DOI:10.12442/j. issn.1002-185X.20210731

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历史
  • 收稿日期:2021-08-18
  • 最后修改日期:2022-01-21
  • 录用日期:2022-01-29
  • 在线发布日期: 2022-12-02
  • 出版日期: 2022-11-30